Bacău County · Romania · 46.57° N · 26.91° E
Solar position in Bacău
Sun position, daylight and the best solar panel angle for Bacău — computed for 46.57° N, 26.91° E, 165 m above sea level.
The sun right now
Sun in Bacău today
Saturday, 24 October 2026 · local time UTC+3
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:01 | sun 18° below horizon |
| Nautical dawn | 06:36 | 12° below |
| Civil dawn | 07:11 | 6° below |
| Sunrise | 07:42 | 106° ESE |
| Golden hour ends | 08:24 | sun 6° up |
| Solar noon | 12:56 | 31.6° high |
| Golden hour starts | 17:27 | sun 6° up |
| Sunset | 18:10 | 253° WSW |
| Civil dusk | 18:41 | 6° below |
| Nautical dusk | 19:16 | 12° below |
| Astronomical dusk | 19:51 | 18° below |
| Day length | 10 h 28 min | |
Sun path diagram for Bacău
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 66.9° at solar noon in Bacău; on the December solstice only 20.0°. Sunrise swings from 54° NE in June to 124° SE in December — a 71° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:47 | 12:23 | 16:59 | 9 h 12 min | 23.6° |
| February | 07:06 | 12:26 | 17:46 | 10 h 40 min | 33.0° |
| March | 06:13 | 12:19 | 18:26 | 12 h 12 min | 43.8° |
| April | 06:14 | 13:11 | 20:08 | 13 h 53 min | 55.4° |
| May | 05:31 | 13:09 | 20:46 | 15 h 15 min | 63.7° |
| June | 05:19 | 13:14 | 21:09 | 15 h 50 min | 66.9° |
| July | 05:40 | 13:18 | 20:56 | 15 h 17 min | 63.9° |
| August | 06:18 | 13:15 | 20:12 | 13 h 54 min | 55.5° |
| September | 06:57 | 13:05 | 19:12 | 12 h 15 min | 44.1° |
| October | 07:38 | 12:56 | 18:15 | 10 h 37 min | 32.7° |
| November | 07:22 | 11:57 | 16:33 | 9 h 11 min | 23.5° |
| December | 07:53 | 12:10 | 16:27 | 8 h 34 min | 20.0° |
A year of daylight in Bacău
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Bacău
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
37°collects the most energy over a year: 1293 kWh per kWp.
75°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1073 | 83% | 0.81 | 6.0× |
| 15° | 1213 | 94% | 1.23 | 4.1× |
| 30° | 1285 | 99% | 1.59 | 3.1× |
| 37° year-round best | 1293 | 100% | 1.73 | 2.8× |
| 45° | 1284 | 99% | 1.86 | 2.5× |
| 47° = latitude | 1279 | 99% | 1.89 | 2.4× |
| 60° | 1212 | 94% | 2.03 | 2.0× |
| 70° | 1127 | 87% | 2.08 | 1.8× |
| 75° off-grid best | 1075 | 83% | 2.09 | 1.7× |
| 90° | 883 | 68% | 2.03 | 1.4× |
A fixed array in Bacău produces the most over a year at 37°. The design month for an off-grid system is December: at 75° it makes 2.09 kWh per kWp a day, 21% more than at 37°, and costs 17% of the yearly total. Why steep panels win winter.
Off-grid solar in Bacău at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 37° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.28 | 2.58 | 2.35 | 2.01 | -3.8 °C |
| February snow | 2.05 | 3.10 | 2.81 | 2.67 | -1.9 °C |
| March | 3.27 | 3.90 | 3.47 | 3.71 | 3.2 °C |
| April | 4.49 | 4.06 | 3.53 | 4.28 | 9.2 °C |
| May | 5.60 | 4.07 | 3.45 | 4.68 | 15.2 °C |
| June | 5.98 | 3.89 | 3.24 | 4.66 | 19.3 °C |
| July | 6.03 | 4.08 | 3.37 | 4.76 | 21.6 °C |
| August | 5.44 | 4.47 | 3.71 | 4.75 | 21.3 °C |
| September | 3.94 | 4.27 | 3.63 | 4.06 | 15.9 °C |
| October | 2.50 | 3.66 | 3.19 | 3.15 | 9.3 °C |
| November | 1.37 | 2.49 | 2.21 | 2.00 | 3.6 °C |
| December snow | 1.03 | 2.30 | 2.08 | 1.73 | -2.0 °C |
| Year | 3.59 avg | 3.58 avg | 1127 kWh | 1293 kWh |
Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 570 Wp of panels at 70°, versus 680 Wp at 37°. The steep array is 17% smaller for the same winter. Size your own system.
Row spacing in Bacău
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
6.9 mrow pitch at 70°
5.6 mrow pitch at 37°
How Bacău compares in Romania
Against the other 125 places in Romania with climate data, for a fixed array at its best angle.
64thof 126 places in Romania for sunshine, shared: 3.59 peak sun hours a day on flat ground.
±0%solar energy a year compared with the average place in Romania: 1,294 against 1,300 kWh per kWp.
+17 mindaylight on the longest day, compared with Bucharest: 15 h 50 min against 15 h 33 min.
37°best year-round tilt here; across Romania it runs from 33° in Mangalia to 39° in Bistriţa.
Of the 126 places in Romania, Mangalia gets the most sun (3.93 peak sun hours a day) and Vişeu de Sus and one other place the least (3.33); Bacău ranks joint 64th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.08 kWh a day here, against 2.01 kWh on average in Romania. The shortest day lasts 8 h 34 min, −16 min compared with Bucharest.
Solar forecast for Bacău, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Bacău
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Places near Bacău
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A free, live card for Bacău: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.